Tekneka T4490 Digital Contact/Non-Contact Tachometer

The Tekneka T4490 digital contact/non-contact tachometer measures from 0.5 ~ 99,999 revolutions per minute (RPM) using both contact and non-contact methods. It includes a crystal time base and microprocessor LS-I circuit for improved measuring speed and accuracy. The T4490 boasts good resolution and a wide measurement range. It also saves the most recent, minimum, and maximum values for future use. It has an automated power-off mode that increases battery life and is powered by 4 x 1.5V AA batteries. This tachometer is designed for long-lasting use with a sturdy ABS plastic casing.